Usage Tips:1. The all-metal design and copper shell brings effective shielding. Thickened solder pad and thickened fixing clamp shall be used for the connection point. 2. The gold-plated plug features oxidation resistance and stable contact performance. 3. The plug comes with M6 x 0.5 internal thread.It has a special interface for wireless microphones. 4. Suitabel for Sony D12 / D21, for Sennheiser, for Shuer and other Lavalier wireless microphone, along with M6 internal thread special plug. 5. Friendly reminder:This plug with internal thread design can only be used for 3.5mm female port with thread, such as for Sony, for Shuer, for Sennheiser and other Lavalier wireless microphones. Interface Type:3.5mm Stereo with M6 internal thread Colour:Black & Gold Material:Metal Package Contents: 10 * 3.5mm Screw Lock Stereo Jack Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.